package com.qingcheng.service.impl;
import com.alibaba.dubbo.config.annotation.Service;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.qingcheng.dao.AdminMapper;
import com.qingcheng.dao.AdminRoleMapper;
import com.qingcheng.dao.RoleMapper;
import com.qingcheng.entity.PageResult;
import com.qingcheng.pojo.system.Admin;
import com.qingcheng.pojo.system.AdminAdminRole;
import com.qingcheng.pojo.system.AdminRole;
import com.qingcheng.pojo.system.Role;
import com.qingcheng.service.system.AdminService;
import com.qingcheng.util.BCrypt;
import org.springframework.beans.factory.annotation.Autowired;
import tk.mybatis.mapper.entity.Example;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;

@Service
public class AdminServiceImpl implements AdminService {

    @Autowired
    private AdminMapper adminMapper;

    @Autowired
    private AdminRoleMapper adminRoleMapper;

    @Autowired
    private RoleMapper roleMapper;

    /**
     * 增加管理员
     * @param adminAdminRole
     */
    public void addAdmin(AdminAdminRole adminAdminRole) {
        //判断id是否等于0,没有说明id为空,属于新增(前端id用隐藏域存储)
        if (adminAdminRole.getAdmin().getId()==null) {
            //将角色名存到管理员表
            Admin admin = adminAdminRole.getAdmin();
            String password = BCrypt.hashpw(admin.getPassword(), BCrypt.gensalt());
            admin.setPassword(password);
            adminMapper.insert(admin);
            Integer adminId = admin.getId();
            //中间表,获取到管理员表回传的id,存到中间表,并把前台传的角色id一一对应
            //获取管理员所对应的所有角色,并一一和管理员id建立对应关系
            List<Role> roleList = adminAdminRole.getRoleList();
            for (Role role : roleList) {
                AdminRole adminRole = new AdminRole();
                adminRole.setAdminId(adminId);
                adminRole.setRoleId(role.getId());
                adminRoleMapper.insert(adminRole);
            }
        }else{
            //否则是修改,修改不用
            Admin admin = adminAdminRole.getAdmin();
            //如果修改密码,就给新密码加密
            if (admin.getPassword()!=null && !"".equals(admin.getPassword())){
                String password = BCrypt.hashpw(admin.getPassword(), BCrypt.gensalt());
                admin.setPassword(password);
            }
            adminMapper.updateByPrimaryKeySelective(admin);
            Integer adminId = admin.getId();
            //修改管理员 角色 一一对应关系,先清除他们的关系,然后再重新添加关系
            Example example = new Example(AdminRole.class);
            Example.Criteria criteria = example.createCriteria();
            criteria.andEqualTo("adminId",adminId);
            adminRoleMapper.deleteByExample(example);
            List<Role> roleList = adminAdminRole.getRoleList();
            for (Role role : roleList) {
                AdminRole adminRole = new AdminRole();
                adminRole.setAdminId(adminId);
                adminRole.setRoleId(role.getId());
                adminRoleMapper.insert(adminRole);
            }
        }
    }



    /**
     * 根据id去查询管理员拥有哪些角色
     * @param id
     * @return
     */
    public AdminAdminRole findAdminOfRoleById(Integer id) {
        //根据id去查询出管理员对象
        Admin admin = adminMapper.selectByPrimaryKey(id);
        //禁止前台读取密码
        admin.setPassword(null);
        //查询该管理员拥有哪些角色
        Example example = new Example(AdminRole.class);
        Example.Criteria criteria = example.createCriteria();
        criteria.andEqualTo("adminId", id);
        List<AdminRole> adminRoleList = adminRoleMapper.selectByExample(example);
        List<Role> roles = new ArrayList<Role>();
        for (AdminRole adminRole : adminRoleList) {
            Role role = roleMapper.selectByPrimaryKey(adminRole.getRoleId());
            roles.add(role);
        }

        //组装对象
        AdminAdminRole adminAdminRole = new AdminAdminRole();
        adminAdminRole.setAdmin(admin);
        adminAdminRole.setRoleList(roles);

        return adminAdminRole;
    }

    /**
     * 返回全部记录
     * @return
     */
    public List<Admin> findAll() {
        return adminMapper.selectAll();
    }

    /**
     * 分页查询
     * @param page 页码
     * @param size 每页记录数
     * @return 分页结果
     */
    public PageResult<Admin> findPage(int page, int size) {
        PageHelper.startPage(page,size);
        Page<Admin> admins = (Page<Admin>) adminMapper.selectAll();
        return new PageResult<Admin>(admins.getTotal(),admins.getResult());
    }

    /**
     * 条件查询
     * @param searchMap 查询条件
     * @return
     */
    public List<Admin> findList(Map<String, Object> searchMap) {
        Example example = createExample(searchMap);
        return adminMapper.selectByExample(example);
    }

    /**
     * 分页+条件查询
     * @param searchMap
     * @param page
     * @param size
     * @return
     */
    public PageResult<Admin> findPage(Map<String, Object> searchMap, int page, int size) {
        PageHelper.startPage(page,size);
        Example example = createExample(searchMap);
        Page<Admin> admins = (Page<Admin>) adminMapper.selectByExample(example);
        return new PageResult<Admin>(admins.getTotal(),admins.getResult());
    }

    /**
     * 根据Id查询
     * @param id
     * @return
     */
    public Admin findById(Integer id) {
        return adminMapper.selectByPrimaryKey(id);
    }

    /**
     * 新增
     * @param admin
     */
    public void add(Admin admin) {
        adminMapper.insert(admin);
    }

    /**
     * 修改
     * @param admin
     */
    public void update(Admin admin) {
        adminMapper.updateByPrimaryKeySelective(admin);
    }

    /**
     *  删除
     * @param id
     */
    public void delete(Integer id) {
        adminMapper.deleteByPrimaryKey(id);
    }



    /**
     * 构建查询条件
     * @param searchMap
     * @return
     */
    private Example createExample(Map<String, Object> searchMap){
        Example example=new Example(Admin.class);
        Example.Criteria criteria = example.createCriteria();
        if(searchMap!=null){
            // 用户名
            if(searchMap.get("loginName")!=null && !"".equals(searchMap.get("loginName"))){
                criteria.andEqualTo("loginName",searchMap.get("loginName"));
            }
            // 密码
            if(searchMap.get("password")!=null && !"".equals(searchMap.get("password"))){
                criteria.andLike("password","%"+searchMap.get("password")+"%");
            }
            // 状态
            if(searchMap.get("status")!=null && !"".equals(searchMap.get("status"))){
                criteria.andEqualTo("status",searchMap.get("status"));
            }

            // id
            if(searchMap.get("id")!=null ){
                criteria.andEqualTo("id",searchMap.get("id"));
            }

        }
        return example;
    }

}
